From b37c41fd6ec704babf37325530e7cb9babf1ac0c Mon Sep 17 00:00:00 2001
From: Allen Wittenauer <aw@apache.org>
Date: Wed, 21 Oct 2015 08:00:26 -0700
Subject: [PATCH] HADOOP-12495. Fix posix_spawn error on OS X (aw)

---
 .../src/main/java/org/apache/hadoop/util/Shell.java            | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Shell.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Shell.java
index d6eca69d95..a451369e95 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Shell.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Shell.java
@@ -817,6 +817,9 @@ protected void run() throws IOException {
       return;
     }
     exitCode = 0; // reset for next run
+    if (Shell.MAC) {
+      System.setProperty("jdk.lang.Process.launchMechanism", "POSIX_SPAWN");
+    }
     runCommand();
   }